JP2000199091A - Gas generating water electrolytic cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas generating water electrolytic cell with its maintenance work such as the replacement of an electrode material facilitated. SOLUTION: A water and air-permeable anode 4 is arranged in contact with one side of a diaphragm 6, and a first sealing member 1a is firmly held to the anode. The sealing member 1a has an opening piercing itself and is communicated directly with the anode. One side of an anode current collector 2 is in close contact with the opposite side of the sealing member 1a, the collector 2 has an opening communicating with the opening of the sealing member 1a, and a second sealing member 1b is arranged in close contact with the opposite side of the collector 2. The sealing member 1b has an opening with which the opening of the collectro 2 is communicated, and the second sealing member 1b is firmly held to the collector 2 as a closed ring outside the opening of the collector. A passage in the anode compartment capable of passing gas and liq. is formed by the anode 4 the opening of the sealing member 1a, the opening of the collector 2 and the opening of the sealing member 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a water electrolysis cell for gas generation. In particular, the present invention relates to a water electrolysis cell for gas generation, which is of a type in which corrosion resistance and sealing performance with respect to ozone gas and ozone water are ensured due to generation of ozone gas, and which can be easily attached to and detached from equipment for collecting and utilizing gas.

[0002]

2. Description of the Related Art Several known types of electrolysis cells for electrolyzing water to generate ozone gas are known. These have, for example, an anode chamber and a cathode chamber separated by a cation exchange membrane made of a solid polymer electrolyte, and generate hydrogen gas in the cathode chamber and generate a mixed gas of oxygen and ozone in the anode chamber. I do. However, in particular, when supplying ozone gas to an ozone gas utilization facility, the electrode portion in the electrolytic cell is one electrode.
They are often replaced every two years. Such an ozone gas utilization equipment is connected to a gas-liquid separation vessel (hereinafter, referred to as an anode trap) which communicates the anode chamber directly or by further piping, and transfers the ozone gas collected by the anode trap to a use point. Supply.

However, most conventional electrolytic cells have an almost inseparable structure including an anode compartment, a cathode compartment, and an electrode portion. Therefore, after attaching the electrolytic cell to the anode trap and using it, there is a process of removing many parts in order to secure a working space for electrode replacement at the time of maintenance. The work becomes very complicated.

On the other hand, in recent literature examples, for example,
0-25586 discloses an assembly structure of a water electrolysis cell capable of generating hydrogen gas, oxygen gas and ozone gas. In the structure exemplified therein, although the components are not inseparable, the components around the electrode portion are not inseparable. In order to take out the electrode portion by loosening the tightening bolts for fixing the components to each other, the surrounding components are completely disjointed, and it is necessary to perform positioning and the like again for assembling again, which is a heavy work load. Conversely, in this type of electrolytic cell, if the entire electrolytic cell is replaced, not just the electrode part, the trouble of disassembling the cell itself is reduced, but the electrolytic cell is replaced with peripheral equipment such as an anode trap. It takes time and effort to remove it, and the replacement part becomes large, which increases the cost of consumables. Moreover, in the structure as exemplified therein, the direction of the pipe connection is restricted, and the installation posture is also restricted for normal operation.

[0005] In order to perform these operations in a correct procedure, a high level of specialized knowledge is required, and the problems of difficulty in maintenance and increase in cost remain.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a water electrolysis cell in which the burden of maintenance work and costs, such as replacement of electrode parts, is reduced. In a preferred aspect, an object of the present invention is to provide a gas generation water electrolysis cell having a high degree of freedom in installation posture.

[0007]

In order to achieve this object, the present invention provides an electrolytic cell in which an internal space is divided into an anode chamber and a cathode chamber by a diaphragm, and water is electrolyzed in the electrolytic cell. A gas-generating water electrolysis cell that generates oxygen and ozone in the anode chamber and generates hydrogen in the cathode chamber by consuming the water-permeable and air-permeable anode electrode on one surface of the diaphragm. A first seal member whose peripheral edge portion surrounds and seals the peripheral edge of the anode electrode is disposed in close contact with one surface, and the first seal member penetrates itself. And an opening portion directly communicating with the anode electrode, and an anode current collector plate is disposed on the opposite surface of the first seal member so that one surface of the anode current collector plate is in close contact with the first seal member. At least one opening communicating with the opening of the sealing member; A second seal member is disposed on the opposite surface of the anode current collector plate in close contact with one surface, and the second seal member has an opening portion; The opening portion of the anode current collector communicates with the second current collector, and a second seal member is radially outside the opening of the anode current collector in close contact with the anode current collector in a closed annular shape. , The anode electrode,
An anode in which the opening portion of the first seal member, the opening portion of the anode current collector, and the opening portion of the second seal member successively communicate gas and liquid outwardly. Along with defining an indoor flow path, the connecting pipe connected to a gas-liquid separation container provided outside for collecting gas generated in the anode chamber is provided, and the connecting pipe is directed radially outward. An extending portion that extends, and further includes a flange that is engaged with the extending portion, the flange being configured to bring one end of the connection pipe into close contact with the second seal member so as to allow the anode chamber to flow therethrough; An urging means for urging the connection pipe against the second seal member so as to be connected to the passage in a water-tight and air-tight manner is engaged, and the connection pipe is provided outside the gas-liquid separation container. A fixing means for fixedly supporting the structure to be supported is engaged, and further,
The electrolytic cell has a casing that presses and wraps at least the cathode chamber side of the electrolytic cell from a direction opposite to the anode chamber side, and the casing has at least one current collector plate at an outer peripheral portion. It has a notch,
A gas generator, wherein a part of the current collector plate extends to the outside of the casing through the at least one cutout portion for the current collector plate and serves as an ear portion connected to a power supply for electrolysis. A water electrolysis cell is proposed.

[0008] Preferably, on the opposite side of the diaphragm,
A water-permeable and gas-permeable cathode electrode is disposed in contact with one surface, and a third seal member whose peripheral portion surrounds and seals the peripheral edge of the cathode electrode is disposed in close contact with one surface. The third seal member has an opening penetrating therethrough and directly communicating with the cathode electrode, and a cathode current collector plate is disposed on the opposite surface of the third seal member with one surface in close contact therewith. The cathode current collector has at least one opening communicating with the opening of the third seal member, and a fourth seal member is provided on the opposite surface of the cathode current collector. The fourth seal member has an opening, the opening of the cathode current collector communicates with the opening, and the opening of the cathode current collector The fourth sealing member is radially outwardly attached to the cathode current collector plate in a closed annular shape. Further, a part of each peripheral portion of the third seal member and the first seal member is in close contact with each other to form a closed annular sealed portion, and the casing is formed of a fourth seal member. The surface is pressed against the surface opposite to the one surface.

In any case, more preferably, the biasing means comprises a combination of a plurality of bolts and female threads,
Each bolt should be covered with a tube made of an electrically insulating and corrosion-resistant material so as to cover the area other than around the head and the tip of each bolt, and to allow rotation and axial movement for removing the bolt. And each of the tubes further comprises the extending portion of the connecting tube and the second
The seal member, the anode current collector plate, the first seal member, and the cathode side casing are penetrated, and each of the female screws is provided on the flange, and each of the bolts is tightened. The extension portion and the casing are urged in a direction to draw each other.

In any case, preferably, the apparatus further includes a second extending portion extending radially outward on the gas-liquid separation container side with respect to the extending portion. The flange is fitted between a portion and the extending portion, and the flange has a portion that extends radially outward from the second extending portion in the fitted state, The fixing means is adapted to be engaged with this part.

A water electrolysis cell for gas generation as described above is proposed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A water electrolysis cell 100 for generating ozone gas as one embodiment of the present invention will be described below. Although the use posture of the cell 100 is not necessarily limited as described later, the posture shown in FIG.

First, an outline of the assembled cell 100 will be described with reference to FIGS. That is, the cell 100 is
It is generally cylindrical as shown in the front view of FIG. Further, it has an anode current collector plate 2 extending leftward from the inside thereof, and a cathode current collector plate 3 which is separated therefrom and also extends leftward from the inside thereof. (Not shown).

The cell 100 has two flanges 13 extending vertically. An ozone utilization facility to which ozone gas and oxygen are supplied from the anode side of the cell 100 often has a container or the like for storing an aqueous solution that communicates with the anode side of the cell 100, and this container is a gas-liquid separation device. Is configured. Each flange 13 is provided with a cell 10 in such a container or the like.
This is for fixing 0. Each flange 13 has a bolt hole 22 for this purpose.

The cell 100 has, on the cathode side, a casing 8 having an opening 191 for connecting an appropriate pipe 19 for drawing out a mixed fluid of hydrogen and water to the outside. Further, a reinforcing plate 14 is provided outside the casing 8. The reinforcing plate 14 has an opening 190 aligned with the opening 191 of the casing 8 for passing the pipe 19.
have. A part of the casing 8 can be seen from the opening 190. In addition, the internal cathode current collector 3 can be seen from the opening 191. From the outside of the reinforcing plate 14, the reinforcing plate 14, the casing 8, the four sealing members described later, the cathode current collector 3, the anode current collector 2, and the connection pipe 9 described later penetrate, and a flange is formed. 13 is tightened into a female screw formed in the female screw 13 to fasten and integrate these members.
The bolts 12 are tightened.

FIG. 2 is a plan view of the cell 100. The upper one of the two flanges 13 fitted on the outer periphery of the connection pipe 9 connected to the container or the like and the O-ring 10 made of a fluororesin can be seen.

FIG. 3 is a rear view of the cell 100. The anode-side current collector 2 can be seen behind the opening of the connection pipe 9.

Next, the components constituting the cell 100 will be described in detail. FIG. 4 is a conceptual horizontal cross-sectional view showing the positional relationship among the casing 8, the electrode pair 7, the connecting pipe 9, and the O-ring 10 in the cell 100, FIG. 5 is an exploded view thereof, and FIG. 6, a plan view is shown in FIG. 7, and a rear view is shown in FIG. As understood from these drawings, the main part of the electrode pair 7 is housed in the inside of the casing 8 on the side where the opening 191 is provided. The current collecting plate 3 is arranged so as to extend to the outside from two notched portions 81 provided on the outer periphery of the cylindrical portion constituting the casing 8. The connection pipe 9 has a substantially cylindrical internal flow path, one end of which extends radially outward at a location where the one end is pressed against the electrode pair 7, and is substantially airtight and closed between the electrode pair 7 and the closed pipe. Liquid-tightly sealed. Further, on the other end side, an O-ring 10 fitted on the outer periphery of the connection pipe 9.
Has a portion extending radially outward so as to serve as a stopper.

Next, the assembling elements of the electrode portion 7, in particular, will be described with reference to a perspective view 9 and a horizontal sectional view 10. That is, the electrode portion 7 has an air-permeable and water-permeable anode electrode 4 that is in close contact with one surface on the back side of the cation exchange membrane 6, and a gas-permeable and intimate contact with the opposite side of the cation exchange membrane 6. And a cathode electrode 5 having a water-permeable structure.

A doughnut-shaped first sealing member 1a, which is substantially flat and thin and has an opening at the center, surrounds the periphery of the anode electrode 4 at the periphery and seals it in a closed annular shape. The film 6 is disposed so as to be in close contact with the one surface. On the outer peripheral side of the sealing portion, as shown, eight through holes are arranged so as to make a round at substantially equal intervals.

On the back side of the first seal member, an anode current collector plate 2 is disposed so that one surface thereof is in close contact. The anode current collecting plate 2 has a substantially disk-shaped portion, and has eight through holes near the periphery of this portion that match the eight through holes of the first seal member. Further, a plurality of openings 102 arranged on a substantially circumferential line at a center side of the eight through holes communicate with an opening portion of the first seal member 1a, and further communicate with the anode electrode 4 via the opening. To have. At least one of the plurality of openings 102 shown in the drawing is disposed near the upper edge portion of the opening portion of the first seal member 1a. Also, the anode current collector plate 2 is adapted to be connected to a power supply for electrolysis,
It has an ear portion extending leftward from the substantially disk-shaped portion.

A doughnut-shaped second sealing member 1b, which is substantially flat, thin and has an opening at the center, is disposed in close contact with the back surface of the anode current collector plate 2. The second seal member 1 b has eight through holes that match the eight through holes of the anode current collector 2. Second seal member 1
The opening portion b is formed and arranged so that the plurality of openings 102 communicate with each other. This second sealing member 1
b, a plurality of openings 10 near the upper edge portion of the opening portion.
At least one of the two is located and in communication. The second sealing member 1b is in close contact with the rear surface of the anode current collector 2 in a closed ring on the outer peripheral side of the opening 102 at the center of the anode current collector 2 to form a sealing structure.

A doughnut-shaped third sealing member 1c, which is substantially flat, thin, and has an opening at the center, surrounds the periphery of the cathode electrode 5 at the periphery and seals it in a closed annular shape. The film 6 is disposed so as to be in close contact with the opposite side surface. On the outer peripheral side of the sealing portion,
Eight through holes are arranged so as to make a round at substantially equal intervals.

On the front side of the third seal member 1c,
Cathode current collector 3 is arranged with one surface in close contact. The cathode current collecting plate 3 has a substantially disc-shaped portion, and has eight through holes near the periphery of this portion that match the eight through holes of the third seal member 1c. Further, a plurality of openings 103 arranged on a substantially circumferential line at a center side of the eight through holes communicate with an opening portion of the third seal member 1c, and further communicate with the cathode electrode 5 via the openings. To have. These multiple openings 103 shown
, At least one of which is arranged near the upper edge of the opening of the third seal member 1c. The cathode current collector also has ears extending to the left from the generally disk-shaped portion, adapted to be connected to a power source for electrolysis.

A doughnut-shaped fourth sealing member 1 d which is substantially flat, thin and has an opening at the center is disposed in close contact with the front side of the cathode current collector plate 3. The fourth seal member 1d has eight through holes matching the eight through holes of the cathode current collector plate 3. The opening portion of the fourth seal member 1d is formed and arranged so that the plurality of openings 103 communicate with each other. In the vicinity of the upper edge of the opening of the fourth seal member 1d, a plurality of openings 1
03, at least one of which is located and communicated. The fourth seal member 1d is in close contact with the front side of the cathode current collector 3 in a closed annular shape on the outer periphery side of the opening 103 at the center of the cathode current collector 3 to form a sealing structure.

The first to fourth seal members 1a to 1a
d was made of fluororesin PTFE (polytetrafluoroethylene). The anode current collector 2 and the cathode current collector 3 were made of titanium. As the anode electrode 4, a porous titanium base material plated with lead dioxide was used. As the cathode electrode 5, a porous titanium base material plated with platinum was used. The cation exchange membrane 6 was made of a cation exchange resin known as Nafion 117 (trademark) of DuPont.

Next, the casing 8 will be described with reference to FIG. That is, the casing 8 has a substantially hollow cylindrical shape, but has a large opening on the back side, from which the electrode pair 7 is accommodated. The casing 8 has two notches 81 on the right side in the rear view 11 that allow the ears of the anode current collector 2 and the ears of the cathode current collector 3 to extend to the outside. Is formed so as to be connected to the large opening on the back side, and the anode current collecting plate 2 and the cathode current collecting plate 3 are incorporated and arranged inside through the large opening and two notched portions 81. Although the front side of the casing 8 is mostly closed, the casing 8 has eight through holes that match the eight through holes of the fourth seal member 1d, and a mixed fluid of hydrogen and water is provided outside. An opening 191 is formed for connecting an appropriate pipe 19 for leading out the same. In addition, this casing 8
Was made of polypropylene.

The reinforcing plate 14 is substantially disk-shaped as shown in the front view 12, but has eight through holes near the periphery thereof that match the eight through holes of the casing 8. Further, an opening 190 which is aligned with and larger than the opening 191 of the casing 8 is formed. The reinforcing plate 14 was made of stainless steel (SUS304).

The connection pipe 9 is shown in a rear view 13 and a plan view 1.
4. As can be seen from the front view 15, it has a cylindrical portion 93 defining an internal flow path. The front edge extends radially outward to form a first donut-shaped disk-shaped extending portion 92. The first donut-shaped disk-shaped extending portion 92 has eight through holes near the peripheral edge thereof, which are aligned with the eight through holes of the second seal member 1b. On the back side of the donut-shaped disk-shaped extending portion, a second donut-shaped disk-shaped extending radially outwardly extends from an outer peripheral portion of the cylindrical portion 93 defining the internal flow path. An existing portion 91 is formed. The base portion on the rear side of the extending portion 91 also functions as a stopper for the O-ring 10 fitted to connect the above-mentioned container or the like of the gas-liquid separation device with good sealing properties. The connecting pipe 9 was made of fluororesin PTFE (polytetrafluoroethylene). The O-ring 10 was made of fluoro rubber.

As shown in the front view of FIG. 16, the flange 13 is a set of two flat plate members 131 and 132 cut in a substantially arch shape. Arch member 131
Have four bolt receiving holes so as to be aligned with the upper four of the eight through holes of the first donut-shaped disk-shaped extending portion 92. The arch-shaped member 132
Four bolt receiving holes are provided so as to be aligned with lower four of the eight through holes of the first donut-shaped disk-shaped extending portion 92. These arch members 13
The inner peripheral surface of each of the four bolt receiving holes 1 and 132 has a shape corresponding to the thread formed on the outer peripheral surface of the trunk portion of a total of eight predetermined bolts 12, and the bolts 12 are tightened. It is formed to be. In other words, it can be said that the female screw corresponding to the bolt 12 is integrally formed on the flange 13 so as to provide each of the four bolt receiving holes. The flange 13 inserts the arch-shaped members 131 and 132 between the first and second donut-shaped disk-shaped extending portions 92 and 91, and connects a total of eight female screw portions to the first. The donut-shaped disk-shaped extending portion 92 is aligned with the eight through holes. Further, portions extending radially outward from the tops of the arches of the arch-shaped members 131 and 132 are formed, and each of these portions is provided with a cover structure such as a container of the above-described gas-liquid separation device. Through holes 22 are formed for bolts which are tightened to securely support the connection pipe 9. That is, the fixed support of the connection pipe 9 to the jacket structure such as the container of the gas-liquid separation device is performed by tightening only two bolts. The material of the two bolts and the arch members 131 and 132 is made of stainless steel (SUS
304).

The eight bolts 12 may be made of stainless steel (SUS304).
Each of the body portions other than the vicinity of the tip screwed and fixed to the female screw portion is fitted with a separate insulating tube 11 as shown in FIG. And so on. Moreover, the insulating tube 11 was made of PTFE. Therefore, bolt 12
Even if ozone gas or ozone water leaks a little in the vicinity of the bolt, the bolt 12 becomes a corrosion-resistant tube 11 in the vicinity, even if the seal by the first to fourth seal members or the like becomes weak around.
, It is possible to continue driving within a range permitted by other surrounding environments. FIG. 18 is an exploded view of the bolt 12 and the insulating tube 11.

By assembling the above-described components, a water electrolysis cell 100 for generating ozone gas as shown in FIGS.
And an operation test was carried out in an installation mode in which it was connected to and fixedly supported by an external gas-liquid separator 20 as shown in the front view of FIG. 19 and the right side view of FIG. After supplying pure water, electrolysis was started at a current density of 100 amps / dm ² .
After 4 hours, the ozone gas concentration in the mixed gas recovered from the anode side was 230 g / m ³ .

The preferred embodiment has been described above.
Other embodiments are possible, and their advantages and disadvantages will be fully understood by those skilled in the art by referring to the following examples. In other words, in the above example, the replenishment of the aqueous solution for electrolysis to the anode is based on the premise that the replenishment is carried out via a container such as an external gas-liquid separator and from there via the connecting pipe 9. The lines may be provided independently, for example, the connecting pipe 9
May be provided so as to be connected to the outer peripheral surface. of course,
The extending portion 91 may have a shape in which a portion of the replenishment line is appropriately formed instead of a donut shape. The flange 13 may be divided into a larger number of members instead of two, and various shapes can be modified.

Although the anode electrode is formed by plating lead oxide on a porous titanium substrate, it may be formed by plating expanded titanium with lead dioxide. Although the cathode electrode is formed by plating a porous titanium base material with platinum, the expanded titanium may be formed by plating platinum or a carbon electrode.

In the above example, the anode and the cathode were installed and operated in a posture in which the anode and the cathode were separated from each other by a vertical diaphragm. .

[0036]

According to the present invention, a thin and compact electrolytic cell can be realized, can be easily attached to and detached from the anode trap, and maintenance work is greatly simplified. In addition, the degree of freedom of the connection structure on the anode trap side is high, and the electrolytic cell has high versatility. Moreover, according to a preferred embodiment, the first sealing member, the anode electrode, the diaphragm, the anode current collector, the second sealing member, the cathode electrode, and the third sealing member are guided by the tube covering the body of the bolt. The cathode current collector plate and the fourth seal member can be assembled, and work efficiency such as positioning at the time of assembly is also good. Further, it can be operated in various mounting postures.

[Brief description of the drawings]

FIG. 1 is a front view of a water electrolysis cell 100 for gas generation according to an embodiment of the present invention.

FIG. 2 is a plan view of the cell 100 of FIG.

FIG. 3 is a rear view of the cell 100 of FIG.

FIG. 4 is a horizontal sectional view showing a positional relationship of a part of components of the cell 100 of FIG.

FIG. 5 is an exploded view showing a positional relationship of some components of the cell 100 of FIG.

FIG. 6 is a front view showing a positional relationship of some components of the cell 100 of FIG.

FIG. 7 is a plan view showing a positional relationship of some components of the cell 100 of FIG.

FIG. 8 is a rear view showing a positional relationship of some components of the cell 100 of FIG. 1;

FIG. 9 is a perspective view showing an assembly element group of the electrode portion 7 of the cell 100 of FIG.

10 is a horizontal sectional view showing an assembly element group of the electrode portion 7 of FIG.

11 is a rear view of the casing 8 of the cell 100 of FIG.

FIG. 12 is a front view of a reinforcing plate 14 of the cell 100 of FIG.

FIG. 13 is a rear view of the connection pipe 9 of the cell 100 of FIG.

FIG. 14 is a plan view of the connection pipe 9 of FIG.

FIG. 15 is a front view of the connection pipe 9 of FIG.

FIG. 16 is a front view of a flange 13 of the cell 100 of FIG.

FIG. 17 shows a tube 1 connected to a bolt 12 of the cell 100 of FIG.
It is a top view of the state which combined 1.

18 is an exploded view of the bolt 12 and the tube 11 of FIG.

FIG. 19 is a front view showing a use state of the cell 100 of FIG. 1;

FIG. 20 is a left side view showing a use state of the cell 100 of FIG. 1;

[Explanation of symbols]

 2 Anode current collector 3 Cathode current collector 8 Casing 12 Bolt 13 Flange 14 Reinforcement plate 100 Electrolysis cell for ozone gas generation

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4K011 AA21 AA31 AA65 CA04 CA05 DA01 4K021 AA01 AA09 AB15 CA11 CA14 DB04 DB31 DB50 DB53 EA06 EA07

Claims (4)

[Claims] An electrolytic cell having an inner space partitioned by a diaphragm into an anode chamber and a cathode chamber, wherein water is consumed by electrolysis in the electrolytic cell to generate oxygen and ozone in the anode chamber, and A gas-generating water electrolysis cell for generating hydrogen in a room, wherein a water-permeable and gas-permeable anode electrode is disposed on one surface of the diaphragm in contact with one surface thereof, and a peripheral portion is a periphery of the anode electrode. A first seal member surrounding and sealing the first electrode is disposed in close contact with one surface, and the first seal member has an opening penetrating therethrough and directly communicating with the anode electrode. An anode current collector plate is disposed on the opposite surface of the seal member so as to be in close contact with one surface, and the anode current collector plate has at least one opening communicating with the opening of the first seal member. A second seal is provided on the opposite surface of the anode current collector plate. The second sealing member has an opening, and the opening of the anode current collector communicates with the opening, and the second sealing member has A second seal member is radially outwardly attached to the anode current collector plate in a closed annular shape outside the opening portion. The anode electrode, the opening portion of the first seal member, and the anode current collector The opening portion of the plate and the opening portion of the second seal member define an anode chamber flow path that sequentially communicates gas and liquid outwardly so that the gas and the liquid can be conducted, and are generated in the anode chamber. A connecting pipe connected to a gas-liquid separation container provided outside for collecting gas, the connecting pipe having an extending portion extending radially outward; A flange engaged with the connecting pipe, the flange being connected to one end of the connecting pipe. An urging means for urging the connection pipe against the second seal member so as to be in close contact with the second seal member and connected to the anode chamber flow path in a water-tight and air-tight manner; A fixing means for fixing and supporting the connection pipe to the outer structure of the gas-liquid separation container is further engaged. Further, the electrolytic cell is configured such that at least the cathode chamber side of the electrolytic cell is connected to the anode chamber side. Has a casing that is pressed against and wraps around from the opposite direction, the casing has at least one cut-out portion for a current collector plate in an outer peripheral portion, and a part of the current collector plate is provided with the at least one current collector plate. A water electrolysis cell for gas generation, characterized in that it extends to the outside of a casing through a cutout portion for an electric plate and serves as an ear portion connected to a power source for electrolysis. 2. A water-permeable and gas-permeable cathode electrode is disposed on the opposite side of the diaphragm in contact with one surface thereof, and a peripheral portion surrounds and seals the peripheral edge of the cathode electrode. A seal member is disposed in close contact with one surface, and the third seal member has an opening penetrating therethrough and directly communicating with the cathode electrode, and is provided on an opposite surface of the third seal member. A cathode current collector plate is disposed in close contact with one surface, the cathode current collector plate has at least one opening communicating with an opening of the third seal member, and a cathode current collector opposite to the cathode current collector. A fourth seal member is disposed in close contact with one surface, and the fourth seal member has an opening portion, and the opening portion of the cathode current collector communicates with the opening portion. And a fourth sealing member radially outside the opening portion of the cathode current collector plate. A part of each of the peripheral portions of the third seal member and the first seal member is in close contact with each other to form a closed annular sealing portion. The water electrolysis cell for gas generation according to claim 1, wherein the casing is pressed against a surface of the fourth seal member opposite to the one surface. 3. The urging means is composed of a combination of a plurality of bolts and female screws, and a tube made of an electrically insulating and corrosion-resistant material is provided so as to cover portions other than around the head and around the tip of each bolt. Each of the tubes is further provided with each of the extending portions of the connecting tube, the second sealing member, and the like so as to allow rotation and axial movement for bolt removal. Penetrating the anode current collector, the first seal member, and the cathode side casing, each of the female screws is provided on the flange, and the extension is performed by tightening each of the bolts. The electrolytic cell for gas generation according to claim 1, wherein the portion and the casing are urged in a direction to draw each other. 4. A second extending portion extending radially outward on the gas-liquid separation container side relative to the extending portion, wherein the second extending portion and the extending portion The flange is inserted between the flanges, and the flange has a portion that extends radially outward from the second extending portion in the inserted state. The gas generation electrolytic cell according to any one of claims 1 to 3, wherein the cell is engaged.